Anthranilic Acid → HCID 19757766, compound

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Reaction Steps

3-Methylbenzenethiol and butyl bromoacetate were reacted by a conventional method and then hydrolyzed to obtain 3-methyl-α-phenylthioacetatic acid. 3-Methyl-α-phenylthioacetatic acid was reacted with thionyl chloride by a conventional method to obtain 3-methyl-α-phenylthioacetyl chloride. Anthranilic acid 5.6 g (4.1 mmol) was dissolved in 10% aqueous sodium hydroxide solution 32 ml and to this solution, 3-methyl-α-phenylthioacetyl chloride (99° C./3.3 mmHg) 8.9 g was added dropwise at 0° C. The resulting solution was stirred at room temperature for 20 minutes and neutralized with 10% hydrochloric acid solution. To this solution, ether was added, and deposited crystals were collected by filtration and washed with hot water to obtain N-(3-methylphenylthioacetyl)anthranilic acid (melting point: 148° to 150° C.) 11.2 g (yield: 25%).

Provenance & Evidence